/*
* Copyright 2013 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.nio;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelOption;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.util.CharsetUtil;
import io.netty.util.NetUtil;
import org.junit.Test;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.nio.channels.ClosedChannelException;
import java.util.Queue;
import java.util.concurrent.LinkedBlockingQueue;
import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;
public class NioSocketChannelTest {
/**
* Reproduces the issue #1600
*/
@Test
public void testFlushCloseReentrance() throws Exception {
NioEventLoopGroup group = new NioEventLoopGroup(1);
try {
final Queue<ChannelFuture> futures = new LinkedBlockingQueue<ChannelFuture>();
ServerBootstrap sb = new ServerBootstrap();
sb.group(group).channel(NioServerSocketChannel.class);
sb.childOption(ChannelOption.SO_SNDBUF, 1024);
sb.childHandler(new ChannelHandlerAdapter() {
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
// Write a large enough data so that it is split into two loops.
futures.add(ctx.write(
ctx.alloc().buffer().writeZero(1048576)).addListener(ChannelFutureListener.CLOSE));
futures.add(ctx.write(ctx.alloc().buffer().writeZero(1048576)));
ctx.flush();
futures.add(ctx.write(ctx.alloc().buffer().writeZero(1048576)));
ctx.flush();
}
});
SocketAddress address = sb.bind(0).sync().channel().localAddress();
Socket s = new Socket(NetUtil.LOCALHOST, ((InetSocketAddress) address).getPort());
InputStream in = s.getInputStream();
byte[] buf = new byte[8192];
for (;;) {
if (in.read(buf) == -1) {
break;
}
// Wait a little bit so that the write attempts are split into multiple flush attempts.
Thread.sleep(10);
}
s.close();
assertThat(futures.size(), is(3));
ChannelFuture f1 = futures.poll();
ChannelFuture f2 = futures.poll();
ChannelFuture f3 = futures.poll();
assertThat(f1.isSuccess(), is(true));
assertThat(f2.isDone(), is(true));
assertThat(f2.isSuccess(), is(false));
assertThat(f2.cause(), is(instanceOf(ClosedChannelException.class)));
assertThat(f3.isDone(), is(true));
assertThat(f3.isSuccess(), is(false));
assertThat(f3.cause(), is(instanceOf(ClosedChannelException.class)));
} finally {
group.shutdownGracefully().sync();
}
}
/**
* Reproduces the issue #1679
*/
@Test
public void testFlushAfterGatheredFlush() throws Exception {
NioEventLoopGroup group = new NioEventLoopGroup(1);
try {
ServerBootstrap sb = new ServerBootstrap();
sb.group(group).channel(NioServerSocketChannel.class);
sb.childHandler(new ChannelHandlerAdapter() {
@Override
public void channelActive(final ChannelHandlerContext ctx) throws Exception {
// Trigger a gathering write by writing two buffers.
ctx.write(Unpooled.wrappedBuffer(new byte[] { 'a' }));
ChannelFuture f = ctx.write(Unpooled.wrappedBuffer(new byte[] { 'b' }));
f.addListener(new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
// This message must be flushed
ctx.writeAndFlush(Unpooled.wrappedBuffer(new byte[]{'c'}));
}
});
ctx.flush();
}
});
SocketAddress address = sb.bind(0).sync().channel().localAddress();
Socket s = new Socket(NetUtil.LOCALHOST, ((InetSocketAddress) address).getPort());
DataInput in = new DataInputStream(s.getInputStream());
byte[] buf = new byte[3];
in.readFully(buf);
assertThat(new String(buf, CharsetUtil.US_ASCII), is("abc"));
s.close();
} finally {
group.shutdownGracefully().sync();
}
}
}